Two Sample T Test Chart. 9 31 4 1 t test mu sample 1 mu sample 2 vs not. T 5 18 p 0 0000 df 62.
X n n bar x 20 175 calculate sample standard deviation. In this formula t is the t value x 1 and x 2 are the means of the two groups being compared s 2 is the pooled standard error of the two groups and n 1 and n 2 are the number of observations in each of the groups. Since this is one sample t test the degree of freedom n 1 12 1 11.
A succinct notation including which type of test was done is.
Calculate the test statistic t 1. From the drop down list select both samples are in one column. The consultant performs a 2 sample t test to determine whether there is a difference in the patient ratings between the hospitals. X n n bar x 20 175 calculate sample standard deviation.
